After My Death, the Girl I Raised Turned Dark

[Raising a BOSS + one heroine + System + character growth + revenge + sweet romance?]

With only six months left to live, Qin Mo unexpectedly transmigrates into a world of immortal cultivation.

He should have been glad to start a new life, but right after transmigrating, he is quickly captured by bandits. By chance, he meets a girl in the cell who is on the brink of death.

Seeing how illness is tormenting her, he remembers what he was once like. Unable to bear watching her die in agony, he decides to help her.

From then on, the girl awakens a special constitution and embarks on the path of cultivation. Clinging tightly to Qin Mo, she vows to protect him for the rest of her life.

But one day, Qin Mo, a mere mortal, is killed before her eyes, then thrown into the Demon Abyss…

After Qin Mo's death, her heart dies with him.

The girl falls completely to darkness. She turns against her master and ancestors, destroys her sect, and makes the world her enemy. To bring back the man she loves, she is willing to destroy the entire world… all just to see him once more.

Qin Mo returns to Blue Star once again, thinking it was all just a dream. Later, the worlds begin to merge, until he sees the girl he raised again, standing before him with tears streaming down her face…

Perhaps when she was at the lowest point in her life, it was then that Qin Mo rescued an ordinary girl and made her a girl who belonged to him alone.

(After the male lead dies, the female lead turns completely dark and becomes a fantasy-world Obito. The novel has a System, but it doesn't play a major role. There is only one heroine.)